1 /* $KAME: ifmcstat.c,v 1.48 2006/11/15 05:13:59 itojun Exp $ */
4 * Copyright (c) 2007-2009 Bruce Simpson.
5 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the project nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
36 #include <sys/types.h>
37 #include <sys/param.h>
38 #include <sys/sysctl.h>
39 #include <sys/socket.h>
40 #include <sys/queue.h>
44 #include <net/if_var.h>
45 #include <net/if_types.h>
46 #include <net/if_dl.h>
47 #include <net/route.h>
49 #include <netinet/in.h>
50 #include <netinet/in_var.h>
51 #include <netinet/in_systm.h>
52 #include <netinet/ip.h>
53 #include <netinet/igmp.h>
55 # include <netinet/if_ether.h>
58 #define SYSCTL_DECL(x)
59 # include <netinet/igmp_var.h>
64 #include <netinet/icmp6.h>
66 # include <netinet6/mld6_var.h>
70 #include <arpa/inet.h>
91 /* XXX: This file currently assumes INET and KVM support in the base system. */
96 extern void printb(const char *, unsigned int, const char *);
99 struct sockaddr_storage ss;
101 struct sockaddr_dl sdl;
103 struct sockaddr_in sin;
106 struct sockaddr_in6 sin6;
109 typedef union sockunion sockunion_t;
111 uint32_t ifindex = 0;
118 #define sa_equal(a1, a2) \
119 (bcmp((a1), (a2), ((a1))->sa_len) == 0)
121 #define sa_dl_equal(a1, a2) \
122 ((((struct sockaddr_dl *)(a1))->sdl_len == \
123 ((struct sockaddr_dl *)(a2))->sdl_len) && \
124 (bcmp(LLADDR((struct sockaddr_dl *)(a1)), \
125 LLADDR((struct sockaddr_dl *)(a2)), \
126 ((struct sockaddr_dl *)(a1))->sdl_alen) == 0))
129 * Most of the code in this utility is to support the use of KVM for
130 * post-mortem debugging of the multicast code.
135 static void if_addrlist(struct ifaddr *);
136 static struct in_multi *
137 in_multientry(struct in_multi *);
141 static void if6_addrlist(struct ifaddr *);
142 static struct in6_multi *
143 in6_multientry(struct in6_multi *);
146 static void kread(u_long, void *, int);
147 static void ll_addrlist(struct ifaddr *);
149 static int ifmcstat_kvm(const char *kernel, const char *core);
151 #define KREAD(addr, buf, type) \
152 kread((u_long)addr, (void *)buf, sizeof(type))
155 struct nlist nl[] = {
156 { "_ifnet", 0, 0, 0, 0, },
161 #endif /* WITH_KVM */
163 static int ifmcstat_getifmaddrs(void);
165 static void in_ifinfo(struct igmp_ifinfo *);
166 static const char * inm_mode(u_int mode);
169 static void in6_ifinfo(struct mld_ifinfo *);
170 static const char * inet6_n2a(struct in6_addr *);
172 int main(int, char **);
179 "usage: ifmcstat [-i interface] [-f address family]"
182 " [-K] [-M core] [-N system]"
188 static const char *options = "i:f:vM:N:"
195 main(int argc, char **argv)
199 const char *kernel = NULL;
200 const char *core = NULL;
203 while ((c = getopt(argc, argv, options)) != -1) {
206 if ((ifindex = if_nametoindex(optarg)) == 0) {
207 fprintf(stderr, "%s: unknown interface\n",
215 if (strcmp(optarg, "inet") == 0) {
221 if (strcmp(optarg, "inet6") == 0) {
226 if (strcmp(optarg, "link") == 0) {
230 fprintf(stderr, "%s: unknown address family\n", optarg);
247 core = strdup(optarg);
251 kernel = strdup(optarg);
262 if (af == AF_LINK && vflag)
267 error = ifmcstat_kvm(kernel, core);
269 * If KVM failed, and user did not explicitly specify a core file,
270 * or force KVM backend to be disabled, try the sysctl backend.
272 if (!Kflag || (error != 0 && (core == NULL && kernel == NULL)))
274 error = ifmcstat_getifmaddrs();
285 in_ifinfo(struct igmp_ifinfo *igi)
289 switch (igi->igi_version) {
293 printf("igmpv%d", igi->igi_version);
296 printf("igmpv?(%d)", igi->igi_version);
299 printb(" flags", igi->igi_flags, "\020\1SILENT\2LOOPBACK");
300 if (igi->igi_version == IGMP_VERSION_3) {
301 printf(" rv %u qi %u qri %u uri %u",
302 igi->igi_rv, igi->igi_qi, igi->igi_qri, igi->igi_uri);
305 printf(" v1timer %u v2timer %u v3timer %u",
306 igi->igi_v1_timer, igi->igi_v2_timer, igi->igi_v3_timer);
311 static const char *inm_modes[] = {
321 if (mode >= MCAST_UNDEFINED && mode <= MCAST_EXCLUDE)
322 return (inm_modes[mode]);
331 ifmcstat_kvm(const char *kernel, const char *core)
333 char buf[_POSIX2_LINE_MAX], ifname[IFNAMSIZ];
334 struct ifnet *ifp, *nifp, ifnet;
336 if ((kvmd = kvm_openfiles(kernel, core, NULL, O_RDONLY, buf)) ==
338 perror("kvm_openfiles");
341 if (kvm_nlist(kvmd, nl) < 0) {
345 if (nl[N_IFNET].n_value == 0) {
346 printf("symbol %s not found\n", nl[N_IFNET].n_name);
349 KREAD(nl[N_IFNET].n_value, &ifp, struct ifnet *);
351 KREAD(ifp, &ifnet, struct ifnet);
352 nifp = ifnet.if_link.tqe_next;
353 if (ifindex && ifindex != ifnet.if_index)
356 printf("%s:\n", if_indextoname(ifnet.if_index, ifname));
358 if_addrlist(TAILQ_FIRST(&ifnet.if_addrhead));
361 if6_addrlist(TAILQ_FIRST(&ifnet.if_addrhead));
364 ll_addrlist(TAILQ_FIRST(&ifnet.if_addrhead));
373 kread(u_long addr, void *buf, int len)
376 if (kvm_read(kvmd, addr, buf, len) != len) {
383 ll_addrlist(struct ifaddr *ifap)
385 char addrbuf[NI_MAXHOST];
388 struct sockaddr_dl sdl;
389 struct ifaddr *ifap0;
391 if (af && af != AF_LINK)
396 KREAD(ifap, &ifa, struct ifaddr);
397 if (ifa.ifa_addr == NULL)
399 KREAD(ifa.ifa_addr, &sa, struct sockaddr);
400 if (sa.sa_family != PF_LINK)
402 KREAD(ifa.ifa_addr, &sdl, struct sockaddr_dl);
403 if (sdl.sdl_alen == 0)
406 getnameinfo((struct sockaddr *)&sdl, sdl.sdl_len,
407 addrbuf, sizeof(addrbuf), NULL, 0, NI_NUMERICHOST);
408 printf("\tlink %s\n", addrbuf);
410 ifap = ifa.ifa_link.tqe_next;
414 struct ifmultiaddr ifm, *ifmp = 0;
416 KREAD(ifap0, &ifa, struct ifaddr);
417 KREAD(ifa.ifa_ifp, &ifnet, struct ifnet);
418 if (TAILQ_FIRST(&ifnet.if_multiaddrs))
419 ifmp = TAILQ_FIRST(&ifnet.if_multiaddrs);
421 KREAD(ifmp, &ifm, struct ifmultiaddr);
422 if (ifm.ifma_addr == NULL)
424 KREAD(ifm.ifma_addr, &sa, struct sockaddr);
425 if (sa.sa_family != AF_LINK)
427 KREAD(ifm.ifma_addr, &sdl, struct sockaddr_dl);
429 getnameinfo((struct sockaddr *)&sdl,
430 sdl.sdl_len, addrbuf, sizeof(addrbuf),
431 NULL, 0, NI_NUMERICHOST);
432 printf("\t\tgroup %s refcnt %d\n",
433 addrbuf, ifm.ifma_refcount);
435 ifmp = TAILQ_NEXT(&ifm, ifma_link);
443 if6_addrlist(struct ifaddr *ifap)
448 struct in6_ifaddr if6a;
449 struct ifaddr *ifap0;
451 if (af && af != AF_INET6)
455 KREAD(ifap, &ifa, struct ifaddr);
456 if (ifa.ifa_addr == NULL)
458 KREAD(ifa.ifa_addr, &sa, struct sockaddr);
459 if (sa.sa_family != PF_INET6)
461 KREAD(ifap, &if6a, struct in6_ifaddr);
462 printf("\tinet6 %s\n", inet6_n2a(&if6a.ia_addr.sin6_addr));
464 * Print per-link MLD information, if available.
466 if (ifa.ifa_ifp != NULL) {
467 struct in6_ifextra ie;
468 struct mld_ifinfo mli;
470 KREAD(ifa.ifa_ifp, &ifnet, struct ifnet);
471 KREAD(ifnet.if_afdata[AF_INET6], &ie,
473 if (ie.mld_ifinfo != NULL) {
474 KREAD(ie.mld_ifinfo, &mli, struct mld_ifinfo);
479 ifap = ifa.ifa_link.tqe_next;
483 struct ifmultiaddr ifm, *ifmp = 0;
484 struct sockaddr_dl sdl;
486 KREAD(ifap0, &ifa, struct ifaddr);
487 KREAD(ifa.ifa_ifp, &ifnet, struct ifnet);
488 if (TAILQ_FIRST(&ifnet.if_multiaddrs))
489 ifmp = TAILQ_FIRST(&ifnet.if_multiaddrs);
491 KREAD(ifmp, &ifm, struct ifmultiaddr);
492 if (ifm.ifma_addr == NULL)
494 KREAD(ifm.ifma_addr, &sa, struct sockaddr);
495 if (sa.sa_family != AF_INET6)
497 (void)in6_multientry((struct in6_multi *)
499 if (ifm.ifma_lladdr == 0)
501 KREAD(ifm.ifma_lladdr, &sdl, struct sockaddr_dl);
502 printf("\t\t\tmcast-macaddr %s refcnt %d\n",
503 ether_ntoa((struct ether_addr *)LLADDR(&sdl)),
506 ifmp = TAILQ_NEXT(&ifm, ifma_link);
511 static struct in6_multi *
512 in6_multientry(struct in6_multi *mc)
514 struct in6_multi multi;
516 KREAD(mc, &multi, struct in6_multi);
517 printf("\t\tgroup %s", inet6_n2a(&multi.in6m_addr));
518 printf(" refcnt %u\n", multi.in6m_refcount);
520 return (multi.in6m_entry.le_next);
528 if_addrlist(struct ifaddr *ifap)
534 struct ifaddr *ifap0;
536 if (af && af != AF_INET)
540 KREAD(ifap, &ifa, struct ifaddr);
541 if (ifa.ifa_addr == NULL)
543 KREAD(ifa.ifa_addr, &sa, struct sockaddr);
544 if (sa.sa_family != PF_INET)
546 KREAD(ifap, &ia, struct in_ifaddr);
547 printf("\tinet %s\n", inet_ntoa(ia.ia_addr.sin_addr));
549 * Print per-link IGMP information, if available.
551 if (ifa.ifa_ifp != NULL) {
553 struct igmp_ifinfo igi;
555 KREAD(ifa.ifa_ifp, &ifnet, struct ifnet);
556 KREAD(ifnet.if_afdata[AF_INET], &ii, struct in_ifinfo);
557 if (ii.ii_igmp != NULL) {
558 KREAD(ii.ii_igmp, &igi, struct igmp_ifinfo);
563 ifap = ifa.ifa_link.tqe_next;
566 struct ifmultiaddr ifm, *ifmp = 0;
567 struct sockaddr_dl sdl;
569 KREAD(ifap0, &ifa, struct ifaddr);
570 KREAD(ifa.ifa_ifp, &ifnet, struct ifnet);
571 if (TAILQ_FIRST(&ifnet.if_multiaddrs))
572 ifmp = TAILQ_FIRST(&ifnet.if_multiaddrs);
574 KREAD(ifmp, &ifm, struct ifmultiaddr);
575 if (ifm.ifma_addr == NULL)
577 KREAD(ifm.ifma_addr, &sa, struct sockaddr);
578 if (sa.sa_family != AF_INET)
580 (void)in_multientry((struct in_multi *)
582 if (ifm.ifma_lladdr == 0)
584 KREAD(ifm.ifma_lladdr, &sdl, struct sockaddr_dl);
585 printf("\t\t\tmcast-macaddr %s refcnt %d\n",
586 ether_ntoa((struct ether_addr *)LLADDR(&sdl)),
589 ifmp = TAILQ_NEXT(&ifm, ifma_link);
594 static const char *inm_states[] = {
607 inm_state(u_int state)
610 if (state >= IGMP_NOT_MEMBER && state <= IGMP_LEAVING_MEMBER)
611 return (inm_states[state]);
616 static struct ip_msource *
617 ims_min_kvm(struct in_multi *pinm)
619 struct ip_msource ims0;
620 struct ip_msource *tmp, *parent;
623 tmp = RB_ROOT(&pinm->inm_srcs);
626 KREAD(tmp, &ims0, struct ip_msource);
627 tmp = RB_LEFT(&ims0, ims_link);
629 return (parent); /* kva */
632 /* XXX This routine is buggy. See RB_NEXT in sys/tree.h. */
633 static struct ip_msource *
634 ims_next_kvm(struct ip_msource *ims)
636 struct ip_msource ims0, ims1;
637 struct ip_msource *tmp;
639 KREAD(ims, &ims0, struct ip_msource);
640 if (RB_RIGHT(&ims0, ims_link)) {
641 ims = RB_RIGHT(&ims0, ims_link);
642 KREAD(ims, &ims1, struct ip_msource);
643 while ((tmp = RB_LEFT(&ims1, ims_link))) {
644 KREAD(tmp, &ims0, struct ip_msource);
645 ims = RB_LEFT(&ims0, ims_link);
648 tmp = RB_PARENT(&ims0, ims_link);
650 KREAD(tmp, &ims1, struct ip_msource);
651 if (ims == RB_LEFT(&ims1, ims_link))
654 while ((tmp = RB_PARENT(&ims0, ims_link))) {
655 KREAD(tmp, &ims1, struct ip_msource);
656 if (ims == RB_RIGHT(&ims1, ims_link)) {
658 KREAD(ims, &ims0, struct ip_msource);
662 ims = RB_PARENT(&ims0, ims_link);
665 return (ims); /* kva */
669 inm_print_sources_kvm(struct in_multi *pinm)
671 struct ip_msource ims0;
672 struct ip_msource *ims;
678 fmode = pinm->inm_st[1].iss_fmode;
679 if (fmode == MCAST_UNDEFINED)
681 for (ims = ims_min_kvm(pinm); ims != NULL; ims = ims_next_kvm(ims)) {
684 KREAD(ims, &ims0, struct ip_msource);
685 /* Only print sources in-mode at t1. */
686 if (fmode != ims_get_mode(pinm, ims, 1))
688 src.s_addr = htonl(ims0.ims_haddr);
689 printf("%s%s", (cnt++ == 0 ? "" : ","), inet_ntoa(src));
694 static struct in_multi *
695 in_multientry(struct in_multi *pinm)
698 const char *state, *mode;
700 KREAD(pinm, &inm, struct in_multi);
701 printf("\t\tgroup %s", inet_ntoa(inm.inm_addr));
702 printf(" refcnt %u", inm.inm_refcount);
704 state = inm_state(inm.inm_state);
706 printf(" state %s", state);
708 printf(" state (%d)", inm.inm_state);
710 mode = inm_mode(inm.inm_st[1].iss_fmode);
712 printf(" mode %s", mode);
714 printf(" mode (%d)", inm.inm_st[1].iss_fmode);
717 printf(" asm %u ex %u in %u rec %u",
718 (u_int)inm.inm_st[1].iss_asm,
719 (u_int)inm.inm_st[1].iss_ex,
720 (u_int)inm.inm_st[1].iss_in,
721 (u_int)inm.inm_st[1].iss_rec);
727 inm_print_sources_kvm(&inm);
736 #endif /* WITH_KVM */
741 in6_ifinfo(struct mld_ifinfo *mli)
745 switch (mli->mli_version) {
748 printf("mldv%d", mli->mli_version);
751 printf("mldv?(%d)", mli->mli_version);
754 printb(" flags", mli->mli_flags, "\020\1SILENT");
755 if (mli->mli_version == MLD_VERSION_2) {
756 printf(" rv %u qi %u qri %u uri %u",
757 mli->mli_rv, mli->mli_qi, mli->mli_qri, mli->mli_uri);
760 printf(" v1timer %u v2timer %u", mli->mli_v1_timer,
767 inet6_n2a(struct in6_addr *p)
769 static char buf[NI_MAXHOST];
770 struct sockaddr_in6 sin6;
772 const int niflags = NI_NUMERICHOST;
774 memset(&sin6, 0, sizeof(sin6));
775 sin6.sin6_family = AF_INET6;
776 sin6.sin6_len = sizeof(struct sockaddr_in6);
778 if (IN6_IS_ADDR_LINKLOCAL(p) || IN6_IS_ADDR_MC_LINKLOCAL(p) ||
779 IN6_IS_ADDR_MC_NODELOCAL(p)) {
780 scopeid = ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]);
782 sin6.sin6_scope_id = scopeid;
783 sin6.sin6_addr.s6_addr[2] = 0;
784 sin6.sin6_addr.s6_addr[3] = 0;
787 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
788 buf, sizeof(buf), NULL, 0, niflags) == 0) {
791 return ("(invalid)");
798 * Retrieve per-group source filter mode and lists via sysctl.
801 inm_print_sources_sysctl(uint32_t ifindex, struct in_addr gina)
803 #define MAX_SYSCTL_TRY 5
812 struct in_addr *pina;
817 mibsize = sizeof(mib) / sizeof(mib[0]);
818 if (sysctlnametomib("net.inet.ip.mcast.filters", mib, &mibsize) == -1) {
819 perror("sysctlnametomib");
825 mib[6] = gina.s_addr; /* 32 bits wide */
826 mibsize = sizeof(mib) / sizeof(mib[0]);
828 if (sysctl(mib, mibsize, NULL, &needed, NULL, 0) == -1) {
829 perror("sysctl net.inet.ip.mcast.filters");
832 if ((buf = malloc(needed)) == NULL) {
836 if (sysctl(mib, mibsize, buf, &needed, NULL, 0) == -1) {
837 if (errno != ENOMEM || ++ntry >= MAX_SYSCTL_TRY) {
844 } while (buf == NULL);
847 if (len < sizeof(uint32_t)) {
854 len -= sizeof(uint32_t);
856 modestr = inm_mode(fmode);
858 printf(" mode %s", modestr);
860 printf(" mode (%u)", fmode);
865 cnt = len / sizeof(struct in_addr);
866 pina = (struct in_addr *)p;
868 for (i = 0; i < cnt; i++) {
871 fprintf(stdout, "%s%s", (i == 0 ? "" : ","),
873 len -= sizeof(struct in_addr);
876 fprintf(stderr, "warning: %u trailing bytes from %s\n",
877 (unsigned int)len, "net.inet.ip.mcast.filters");
882 #undef MAX_SYSCTL_TRY
889 * Retrieve MLD per-group source filter mode and lists via sysctl.
891 * Note: The 128-bit IPv6 group address needs to be segmented into
892 * 32-bit pieces for marshaling to sysctl. So the MIB name ends
893 * up looking like this:
894 * a.b.c.d.e.ifindex.g[0].g[1].g[2].g[3]
895 * Assumes that pgroup originated from the kernel, so its components
896 * are already in network-byte order.
899 in6m_print_sources_sysctl(uint32_t ifindex, struct in6_addr *pgroup)
901 #define MAX_SYSCTL_TRY 5
902 char addrbuf[INET6_ADDRSTRLEN];
912 struct in6_addr *pina;
917 mibsize = sizeof(mib) / sizeof(mib[0]);
918 if (sysctlnametomib("net.inet6.ip6.mcast.filters", mib,
920 perror("sysctlnametomib");
927 for (i = 0; i < 4; i++)
930 mibsize = sizeof(mib) / sizeof(mib[0]);
932 if (sysctl(mib, mibsize, NULL, &needed, NULL, 0) == -1) {
933 perror("sysctl net.inet6.ip6.mcast.filters");
936 if ((buf = malloc(needed)) == NULL) {
940 if (sysctl(mib, mibsize, buf, &needed, NULL, 0) == -1) {
941 if (errno != ENOMEM || ++ntry >= MAX_SYSCTL_TRY) {
948 } while (buf == NULL);
951 if (len < sizeof(uint32_t)) {
958 len -= sizeof(uint32_t);
960 modestr = inm_mode(fmode);
962 printf(" mode %s", modestr);
964 printf(" mode (%u)", fmode);
969 cnt = len / sizeof(struct in6_addr);
970 pina = (struct in6_addr *)p;
972 for (i = 0; i < cnt; i++) {
975 inet_ntop(AF_INET6, (const char *)pina++, addrbuf,
977 fprintf(stdout, "%s%s", (i == 0 ? "" : ","), addrbuf);
978 len -= sizeof(struct in6_addr);
981 fprintf(stderr, "warning: %u trailing bytes from %s\n",
982 (unsigned int)len, "net.inet6.ip6.mcast.filters");
987 #undef MAX_SYSCTL_TRY
992 ifmcstat_getifmaddrs(void)
994 char thisifname[IFNAMSIZ];
995 char addrbuf[NI_MAXHOST];
996 struct ifaddrs *ifap, *ifa;
997 struct ifmaddrs *ifmap, *ifma;
998 sockunion_t lastifasa;
999 sockunion_t *psa, *pgsa, *pllsa, *pifasa;
1002 uint32_t lastifindex, thisifindex;
1010 lastifasa.ss.ss_family = AF_UNSPEC;
1012 if (getifaddrs(&ifap) != 0) {
1013 warn("getifmaddrs");
1017 if (getifmaddrs(&ifmap) != 0) {
1018 warn("getifmaddrs");
1023 for (ifma = ifmap; ifma; ifma = ifma->ifma_next) {
1025 if (ifma->ifma_name == NULL || ifma->ifma_addr == NULL)
1028 psa = (sockunion_t *)ifma->ifma_name;
1029 if (psa->sa.sa_family != AF_LINK) {
1031 "WARNING: Kernel returned invalid data.\n");
1036 /* Filter on interface name. */
1037 thisifindex = psa->sdl.sdl_index;
1038 if (ifindex != 0 && thisifindex != ifindex)
1041 /* Filter on address family. */
1042 pgsa = (sockunion_t *)ifma->ifma_addr;
1043 if (af != 0 && pgsa->sa.sa_family != af)
1046 strlcpy(thisifname, link_ntoa(&psa->sdl), IFNAMSIZ);
1047 pcolon = strchr(thisifname, ':');
1051 /* Only print the banner for the first ifmaddrs entry. */
1052 if (lastifindex == 0 || lastifindex != thisifindex) {
1053 lastifindex = thisifindex;
1054 fprintf(stdout, "%s:\n", thisifname);
1058 * Currently, multicast joins only take place on the
1059 * primary IPv4 address, and only on the link-local IPv6
1060 * address, as per IGMPv2/3 and MLDv1/2 semantics.
1061 * Therefore, we only look up the primary address on
1065 for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
1066 if ((strcmp(ifa->ifa_name, thisifname) != 0) ||
1067 (ifa->ifa_addr == NULL) ||
1068 (ifa->ifa_addr->sa_family != pgsa->sa.sa_family))
1071 * For AF_INET6 only the link-local address should
1072 * be returned. If built without IPv6 support,
1073 * skip this address entirely.
1075 pifasa = (sockunion_t *)ifa->ifa_addr;
1076 if (pifasa->sa.sa_family == AF_INET6
1078 && !IN6_IS_ADDR_LINKLOCAL(&pifasa->sin6.sin6_addr)
1087 continue; /* primary address not found */
1089 if (!vflag && pifasa->sa.sa_family == AF_LINK)
1092 /* Parse and print primary address, if not already printed. */
1093 if (lastifasa.ss.ss_family == AF_UNSPEC ||
1094 ((lastifasa.ss.ss_family == AF_LINK &&
1095 !sa_dl_equal(&lastifasa.sa, &pifasa->sa)) ||
1096 !sa_equal(&lastifasa.sa, &pifasa->sa))) {
1098 switch (pifasa->sa.sa_family) {
1109 pafname = "unknown";
1113 switch (pifasa->sa.sa_family) {
1118 inet6_n2a(&pifasa->sin6.sin6_addr);
1119 strlcpy(addrbuf, p, sizeof(addrbuf));
1127 error = getnameinfo(&pifasa->sa,
1129 addrbuf, sizeof(addrbuf), NULL, 0,
1132 perror("getnameinfo");
1139 fprintf(stdout, "\t%s %s\n", pafname, addrbuf);
1142 * Print per-link IGMP information, if available.
1144 if (pifasa->sa.sa_family == AF_INET) {
1145 struct igmp_ifinfo igi;
1146 size_t mibsize, len;
1149 mibsize = sizeof(mib) / sizeof(mib[0]);
1150 if (sysctlnametomib("net.inet.igmp.ifinfo",
1151 mib, &mibsize) == -1) {
1152 perror("sysctlnametomib");
1155 mib[mibsize] = thisifindex;
1156 len = sizeof(struct igmp_ifinfo);
1157 if (sysctl(mib, mibsize + 1, &igi, &len, NULL,
1159 perror("sysctl net.inet.igmp.ifinfo");
1167 * Print per-link MLD information, if available.
1169 if (pifasa->sa.sa_family == AF_INET6) {
1170 struct mld_ifinfo mli;
1171 size_t mibsize, len;
1174 mibsize = sizeof(mib) / sizeof(mib[0]);
1175 if (sysctlnametomib("net.inet6.mld.ifinfo",
1176 mib, &mibsize) == -1) {
1177 perror("sysctlnametomib");
1180 mib[mibsize] = thisifindex;
1181 len = sizeof(struct mld_ifinfo);
1182 if (sysctl(mib, mibsize + 1, &mli, &len, NULL,
1184 perror("sysctl net.inet6.mld.ifinfo");
1190 #if defined(INET) || defined(INET6)
1193 lastifasa = *pifasa;
1196 /* Print this group address. */
1198 if (pgsa->sa.sa_family == AF_INET6) {
1199 const char *p = inet6_n2a(&pgsa->sin6.sin6_addr);
1200 strlcpy(addrbuf, p, sizeof(addrbuf));
1204 error = getnameinfo(&pgsa->sa, pgsa->sa.sa_len,
1205 addrbuf, sizeof(addrbuf), NULL, 0, NI_NUMERICHOST);
1207 perror("getnameinfo");
1210 fprintf(stdout, "\t\tgroup %s", addrbuf);
1212 if (pgsa->sa.sa_family == AF_INET) {
1213 inm_print_sources_sysctl(thisifindex,
1214 pgsa->sin.sin_addr);
1218 if (pgsa->sa.sa_family == AF_INET6) {
1219 in6m_print_sources_sysctl(thisifindex,
1220 &pgsa->sin6.sin6_addr);
1223 fprintf(stdout, "\n");
1225 /* Link-layer mapping, if present. */
1226 pllsa = (sockunion_t *)ifma->ifma_lladdr;
1227 if (pllsa != NULL) {
1228 error = getnameinfo(&pllsa->sa, pllsa->sa.sa_len,
1229 addrbuf, sizeof(addrbuf), NULL, 0, NI_NUMERICHOST);
1230 fprintf(stdout, "\t\t\tmcast-macaddr %s\n", addrbuf);
1235 freeifmaddrs(ifmap);